OuterMarker is spot on and thanks for this update. I was flying with Vulkan unchecked and the outside the plane mouse fist and clicking of chocks, doors, pitot cover and airplane cover did not work. I switched Vulkan ON and the mouse fist came back to life and could toggle the chocks etc from outside the plane. Interesting the mouse fist works inside the plane even with Vulkan turned off. When Vulkan is turned on and I am in IMC the fps drops down to 10 even with antialias turned off. I am flying with a reasonable gaming PC 2070 GPU and using the latest SMP5 cloud rendering. I am flying right now in south FL with broken clouds, Vulkan turned on and can get 39 fps so will keep Vulkan on. Good to know the reason the mouse fist did not work outside the plane. This SR22TN aircraft is extremely valuable to simulate the real Cirrus, many thanks to the developers. Bill